5H028 二次電池技術 Patent Trends
The Theme Code "二次電池技術" had 481 patent application filings in the publication-lag-adjusted comparison period (2024-01-01 to 2024-10-31). This is a with an decreasing trend transition of -109 filings (-18.5%) over 590 they had in the same period of the previous year (2023-01-01 to 2023-10-31).
The highest number of filings in 2023 with 752 cases, and their lowest number in 2024 with 577 cases (years covered: 2021, 2022, 2023, 2024).
The mean of the number of filings over the last 4 years (2021 to 2024, 2,553 cases in total) is 638, and the median is 612. The coefficient of variation (standard deviation/mean) is 0.11, and filings have been moderate fluctuations.
| Index | Value |
|---|---|
| Average | 638 patents |
| Std Dev | 67.4 |
| COV | 0.11 |
The number of filings has been decreasing for the publication-lag-adjusted last 3 years (2023 to 2025).
| Year | Cases | YOY |
|---|---|---|
| 2025 year | 140 cases | -75.7% |
| 2024 year | 577 cases | -23.27% |
| 2023 year | 752 cases | +21.29% |
This report provides the latest patent analysis information (the IP landscape, including a patent map) on the patent search results of the JP patent database for 二次電池技術[5H028] for the period of the last 6 years (2020 to 2025). You can compare the information in this report with the trends in your competitors’ patent filings and technologies.
This service provides, free of charge, a patent analysis report based on the latest patent data (Japanese, U.S., European, and PCT application publications) for use in patent searches, patent analysis, and IP landscaping. The service is offered by "Patent Integration" a firm specializing in patent search/patent analysis.
This report includes basic information to help you understand the IP strategy and management of 二次電池技術, such as changes in the number of patents/patent applications they have filed, comparisons of the numbers of patents/patent applications filed by their peers and competitors, and their top coapplicants (joint research partners, alliance partners). It can be used in various intellectual property business operations such as IP landscaping, patent search/patent analysis, preparation of intellectual property business evaluation reports, selection of M&A candidates, and selection of alliance partners.
He is a patent attorney at a patent office. He specializes in invention counseling, patent filing, and intellectual property strategies for start-up companies and new businesses in the fields of software, information technology and artificial intelligence. He runs a patent course for beginners on Udemy, an online course provider.
After studying physics at the University of Tokyo as a doctoral student, he was engaged in intellectual property analysis and technology trend research as an in-house patent attorney at a precision equipment manufacturer and at Toyota Central R&D Labs. Inc..
Introduction
The concept of the "IP landscape" (IPL) has been attracting attention recently.
An IP landscape is not limited to patent information, but also integrates and analyzes business information (e.g., non-patent information such as papers, news releases, stock information, and market information). Intellectual-property-based business management is realized through the analysis of intellectual property information applied to the formulation of management strategies and business strategies. This is a comprehensive approach that includes but not limited to planning of open and closed strategies, selecting M&A candidates, searching for alliance partners, and formulating intellectual property strategies, through the exploitation of intellectual property information.
IP landscaping usually includes patent search and patent analysis. In patent search and patent analysis, it is important to grasp the market position of each company and the overall technological trends and development trends for each technology. More specifically, it is important to understand what intellectual property your own company and other companies hold, what the strengths and weaknesses of other companies are, and how other companies are trying to exploit their intellectual property. In other words, it is important to understand both the business strategy and the intellectual property strategy of each company.
二次電池技術, Changes in the Number of JP Patents/Patent Applications
The changes in the number of patent filings of 二次電池技術 over the last 6 years (JP) are shown below.
The change in the number of patents/patent applications is the most basic index in patent analysis. By examining the change in the number of patents/patent applications, you can see the status of technological development and R&D focus for each company or technology. It should be noted that since there is a one and a half year lag between the filing and the laying open of patent applications, it is not possible to analyze the situation more recently than one and half years prior to the present.
二次電池技術 JP patent filing trend (unit: cases)
| Year | Cases |
|---|---|
| 2021 | 604 |
| 2022 | 620 |
| 2023 | 752 |
| 2024 | 577 |
| 2025 | 140 |
Patent Landscape
Patent landscaping is a visualization of the distribution of patent filings (application focus areas) for each technical keyword. Mountains and islands indicated by heatmap contours represent clusters of patent applications filed, and red areas on the heatmap indicate many patent filings relating to the keyword.
The patent landscape for 二次電池技術 gives an intuitive understanding of what patent filings they have made and what technical position is to be established. By selecting filing year checkboxes and filtering, you can track their past filing trends (what technical area they have focused on).
By selecting applicant/patent holder checkboxes and filtering, you can visually grasp the technical areas of the filings for each applicant and the partnerships or alliances formed. Please use it as a guide for patent analysis and IP landscaping.
Keywords (importance)
Top keywords frequently used in patent filings for 二次電池技術 are shown below.
Top keywords for 二次電池技術
| Keyword | Score |
|---|---|
| 電池 | 100.0 |
| 電極 | 99.8 |
| セパレータ | 45.18 |
| 間 | 39.82 |
| 電解 | 35.03 |
| 配置 | 32.87 |
| 方向 | 32.8 |
| 積層 | 31.63 |
| 極 | 28.06 |
| 活 | 20.12 |
| 部材 | 19.52 |
| ケース | 16.54 |
| 内部 | 14.56 |
| 電気 | 14.1 |
| 抑制 | 13.25 |
Search Set (Analysis Patents)
This patent analysis report was created for a patent search set of 2,693 cases retrieved by applying the following search formula and analysis period to the following patent database. Patent information such as a patent analysis result, a patent map, and a patent landscape can be freely used for patent searches, analysis, and work on intellectual property strategies, including IP landscaping.
二次電池技術[5H028]
Recent publications
| Publication No. | Title | Bibliographic info | Theme |
|---|---|---|---|
| 1. JPA2026-145650 | プレス装置及び当該プレス装置を用いた蓄電デバイスの製造方法。 | ・Applicant プライムプラネットエナジー&ソリューションズ株式会社 ・Filing date 2025-03-03 ・Publication date 2026-09-15 | 5E078, 5E082, 5H028 |
| 2. JPP7921709 | 電極組立体およびその電極組立体を含む二次電池 | ・Applicant エルジーエナジーソリューションリミテッド ・Filing date 2023-09-08 ・Publication date 2026-09-15 | 5H021, 5H028, 5H029, 5H043 |
| 3. JPP7922275 | 圧力センサを含む円筒形バッテリー、スウェリング圧力モニタリング装置、及び該装置を含むバッテリー管理システム | ・Applicant エルジーエナジーソリューションリミテッド ・Filing date 2023-08-28 ・Publication date 2026-09-15 | 5H011, 5H028, 5H029, 5H040, 5H043 |
| 4. JPA2026-145814 | 電極群および二次電池 | ・Applicant 株式会社東芝 ・Filing date 2025-03-03 ・Publication date 2026-09-15 | 5H028, 5H029 |
| 5. JPA-HYO2026-531150 | 平坦化装置及び電池組立システム | ・Applicant 寧徳時代新能源科技股分有限公司 ・Filing date 2024-08-16 ・Publication date 2026-09-15 | 4E090, 5H028, 5H029, 5H043 |
| 6. JPP7921080 | 蓄電装置の製造方法 | ・Applicant トヨタ自動車株式会社 ・Filing date 2023-10-20 ・Publication date 2026-09-15 | 5H011, 5H028, 5H029 |
| 7. JPA2026-145646 | 電池 | ・Applicant トヨタ自動車株式会社, プライムプラネットエナジー&ソリューションズ株式会社 ・Filing date 2025-03-03 ・Publication date 2026-09-15 | 5H011, 5H012, 5H021, 5H028, 5H029, +1 more |
| 8. JPA-HYO2026-531297 | 電池のタブ貫通装置及び組み立て設備 本願は、２０２３年１１月３０日に提出された、出願番号が２０２３２３２８０５９４Ｘ、発明名称が「電池のタブ貫通装置及び組み立て設備」の中国特許出願の優先権を主張し、その全体が参照により本願に組み込まれる。 | ・Applicant 寧徳時代新能源科技股分有限公司 ・Filing date 2024-05-31 ・Publication date 2026-09-15 | 5H011, 5H028, 5H029, 5H043 |
| 9. JPP7920944 | 蓄電デバイス及び蓄電デバイスの製造方法 | ・Applicant 株式会社豊田中央研究所 ・Filing date 2023-02-03 ・Publication date 2026-09-15 | 5E078, 5H028, 5H029, 5H043 |
| 10. JPP7921382 | 二次電池 | ・Applicant 株式会社村田製作所 ・Filing date 2021-01-29 ・Publication date 2026-09-15 | 5H028, 5H029, 5H043 |
| 11. JPP7921515 | 電極組立体 | ・Applicant エルジーエナジーソリューションリミテッド ・Filing date 2022-07-08 ・Publication date 2026-09-15 | 5H021, 5H028, 5H029 |
| 12. JPP7920472 | 電極組立体、電極組立体の製造方法、および電極組立体を含む二次電池 | ・Applicant エルジーエナジーソリューションリミテッド ・Filing date 2024-11-01 ・Publication date 2026-09-14 | 5H028, 5H029 |
| 13. JPP7920163 | 電極組立体、円筒形バッテリーセル、それを含むバッテリーパック及び自動車 | ・Applicant エルジーエナジーソリューションリミテッド ・Filing date 2022-09-28 ・Publication date 2026-09-14 | 5H011, 5H012, 5H028, 5H043 |
| 14. JPP7920072 | 蓄電モジュール製造方法、及び、蓄電モジュール | ・Applicant トヨタ自動車株式会社, 株式会社豊田自動織機 ・Filing date 2023-02-24 ・Publication date 2026-09-14 | 5E078, 5H011, 5H028, 5H029 |
| 15. JPA-HYO2026-530994 | 電池セル内の液体電解質の浸透を促進するためのシステムおよび方法 | ・Applicant プロジェクト・エンジニアリング・アンド・コントラクティング・ナムローゼ・フエンノートシャップ ・Filing date 2024-08-11 ・Publication date 2026-09-11 | 5H028, 5H029 |
Same industry / competition company information (JP)
{'ja': '技術テーマ「二次電池技術」における上位出願人の特許情報を以下に示します。各企業の特許件数を比較することで、過去および現在の各社の技術テーマにおける研究開発状況や、技術テーマにおける各社の位置付けを確認できます。なお、特許は出願から公開までに一年半のタイムラグがあるため、一年半より直近の状況については分析できない点に注意する必要があります。', 'en': "The patent information of the higher applicant in the technical theme 二次電池技術 is shown below. By comparing the number of patents of each company, you can check the research and development status of each company's past and present technical themes and the position of each company in the technical theme. Patents have a time lag of about 18 months from filing to publication."}
Trends in filing of joint patent applications in the last 3 years (2023 to 2025).
Comparing the number of applications of each company, トヨタ自動車株式会社 has the highest number of joint applications in the last in the last 3 years (2023 to 2025) with 369 cases, followed by エルジーエナジーソリューションリミテッド with 311 cases.
| Name | Cases |
|---|---|
| トヨタ自動車株式会社 | 369 cases |
| エルジーエナジーソリューションリミテッド | 311 cases |
| プライムプラネットエナジー&ソリューションズ株式会社 | 163 cases |
| 株式会社豊田自動織機 | 75 cases |
| トヨタバッテリー株式会社 | 69 cases |
| 株式会社GSユアサ | 47 cases |
Trends in filing of joint patent applications for the target period (2020 to 2025).
Comparing the number of applications of each company, エルジーエナジーソリューションリミテッド has the highest number of joint applications in the last for the target period (2020 to 2025) with 588 cases, followed by トヨタ自動車株式会社 with 534 cases.
| Name | Cases |
|---|---|
| エルジーエナジーソリューションリミテッド | 588 cases |
| トヨタ自動車株式会社 | 534 cases |
| プライムプラネットエナジー&ソリューションズ株式会社 | 315 cases |
| 株式会社豊田自動織機 | 196 cases |
| 株式会社GSユアサ | 162 cases |
| トヨタバッテリー株式会社 | 151 cases |
Same industry / competition company JP patent filing ranking
佐藤総合特許事務所 代表弁理士
佐藤 寿のコメント
競合企業の長期推移をどう読むか
同業や競合企業の長期的な特許出願件数の推移から、長期トレンドと出願件数の山や谷を確認することができます。
解説の続きを読む
Same industry / competition company, Change in the Number of JP Patents
Below is a patent map showing changes in the number of applications for JP patents of 6 companies in the same industry over the past 6 years.
Competitor filing ranking
| Name | Cases |
|---|---|
| エルジーエナジーソリューションリミテッド | 588 |
| トヨタ自動車株式会社 | 534 |
| プライムプラネットエナジー&ソリューションズ株式会社 | 315 |
| 株式会社豊田自動織機 | 196 |
| 株式会社GSユアサ | 162 |
| トヨタバッテリー株式会社 | 151 |
Top company information (JP)
{'ja': '技術テーマ「二次電池技術」における上位出願人の特許情報を以下に示します。各企業の特許件数を比較することで、過去および現在の各社の技術テーマにおける研究開発状況や、技術テーマにおける各社の位置付けを確認できます。なお、特許は出願から公開までに一年半のタイムラグがあるため、一年半より直近の状況については分析できない点に注意する必要があります。', 'en': "The patent information of the higher applicant in the technical theme 二次電池技術 is shown below. By comparing the number of patents of each company, you can check the research and development status of each company's past and present technical themes and the position of each company in the technical theme. Patents have a time lag of about 18 months from filing to publication."}
佐藤総合特許事務所 代表弁理士
佐藤 寿のコメント
競合企業との比較のポイント
同業や競合企業が特許に注力している分野を知ることで、自社の戦略や製品開発の方向性を把握することができます。
解説の続きを読む
Trends in filing of joint patent applications in the last 3 years (2023 to 2025).
among the top coapplicants, トヨタ自動車株式会社 has the highest number of joint applications in the last in the last 3 years (2023 to 2025) with 369 cases, followed by エルジーエナジーソリューションリミテッド with 311 cases.
| Name | Cases |
|---|---|
| トヨタ自動車株式会社 | 369 cases |
| エルジーエナジーソリューションリミテッド | 311 cases |
| プライムプラネットエナジー&ソリューションズ株式会社 | 163 cases |
Trends in filing of joint patent applications for the target period (2020 to 2025).
among the top coapplicants, エルジーエナジーソリューションリミテッド has the highest number of joint applications in the last for the target period (2020 to 2025) with 588 cases, followed by トヨタ自動車株式会社 with 534 cases.
| Name | Cases |
|---|---|
| エルジーエナジーソリューションリミテッド | 588 cases |
| トヨタ自動車株式会社 | 534 cases |
| プライムプラネットエナジー&ソリューションズ株式会社 | 315 cases |
Top company JP patent filing ranking
Below is a ranking of the number of JP patent applications by 二次電池技術’s top 3 coapplicants over the last 6 years.
佐藤総合特許事務所 代表弁理士
佐藤 寿のコメント
競合企業の長期推移をどう読むか
同業や競合企業の長期的な特許出願件数の推移から、長期トレンドと出願件数の山や谷を確認することができます。
解説の続きを読む
Top co-applicant filing ranking
| Name | Cases |
|---|---|
| エルジーエナジーソリューションリミテッド | 588 |
| トヨタ自動車株式会社 | 534 |
| プライムプラネットエナジー&ソリューションズ株式会社 | 315 |
Top company, Change in the Number of JP Patents
Below is a patent map showing the changes in the numbers of JP patent filings by 二次電池技術’s top 3 coapplicants over the last 6 years.
Top co-applicant filing ranking
| Name | Cases |
|---|---|
| エルジーエナジーソリューションリミテッド | 588 |
| トヨタ自動車株式会社 | 534 |
| プライムプラネットエナジー&ソリューションズ株式会社 | 315 |
Top company details
Trends in filing of joint patent applications with トヨタ自動車株式会社
二次電池技術 filed 534 joint applications with トヨタ自動車株式会社 for the analysis period (2020 to 2025).
The mean of the number of filings over the last 5 years (2020 to 2024, 499 cases in total) is 99.8, and the median is 68.0. The coefficient of variation (standard deviation/mean) is 0.6, and filings have been large fluctuations.
The number of filings has been decreasing for the publication-lag-adjusted last 3 years (2023 to 2025). The highest number of filings in 2023 with 205 cases, and their lowest number in 2021 with 32 cases (years covered: 2020, 2021, 2022, 2023, 2024).
| Index | Value |
|---|---|
| Average | 99.8 patents |
| Std Dev | 61.2 |
| COV | 0.6 |
| Year | Cases | YOY |
|---|---|---|
| 2025 year | 35 cases | -72.9% |
| 2024 year | 129 cases | -37.1% |
| 2023 year | 205 cases | +201% |
Trends in filing of joint patent applications with エルジーエナジーソリューションリミテッド
二次電池技術 filed 588 joint applications with エルジーエナジーソリューションリミテッド for the analysis period (2020 to 2025).
The mean of the number of filings over the last 5 years (2020 to 2024, 567 cases in total) is 113, and the median is 126. The coefficient of variation (standard deviation/mean) is 0.5, and filings have been large fluctuations.
The highest number of filings in 2022 with 182 cases, and their lowest number in 2021 with 46 cases (years covered: 2020, 2021, 2022, 2023, 2024).
| Index | Value |
|---|---|
| Average | 113 patents |
| Std Dev | 56.8 |
| COV | 0.5 |
| Year | Cases | YOY |
|---|---|---|
| 2025 year | 21 cases | -83.3% |
| 2024 year | 126 cases | -23.17% |
| 2023 year | 164 cases | -9.89% |
Trends in filing of joint patent applications with プライムプラネットエナジー&ソリューションズ株式会社
二次電池技術 filed 315 joint applications with プライムプラネットエナジー&ソリューションズ株式会社 for the analysis period (2020 to 2025).
The mean of the number of filings over the last 5 years (2020 to 2024, 305 cases in total) is 61.0, and the median is 60.0. The coefficient of variation (standard deviation/mean) is 0.28, and filings have been large fluctuations.
The number of filings has been decreasing for the publication-lag-adjusted last 3 years (2023 to 2025). The highest number of filings in 2023 with 91 cases, and their lowest number in 2020 with 38 cases (years covered: 2020, 2021, 2022, 2023, 2024).
| Index | Value |
|---|---|
| Average | 61.0 patents |
| Std Dev | 17.2 |
| COV | 0.28 |
| Year | Cases | YOY |
|---|---|---|
| 2025 year | 10 cases | -83.9% |
| 2024 year | 62 cases | -31.9% |
| 2023 year | 91 cases | +68.5% |
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佐藤総合特許事務所 代表弁理士
佐藤 寿のコメント
競合企業との比較のポイント
同業や競合企業が特許に注力している分野を知ることで、自社の戦略や製品開発の方向性を把握することができます。
解説の続きを読む